Printing-press.



E. RICKENBACHEB.

PRINTING PRESS.

APPUCATION FILED MAY 8. I917.

Fawn-wines. 18,1917.

2 SNEETS-SHEET I E. RI CKENBACHER.

PRINTING PRESS.

APPLICATION FILED MAY 8. I917. 1,250,353, v Patented Dec. 18,1917;

2 SHEETS-SHEET 2..

EDWIN RICKENBACI-IER, OF WASHINGTON, DISTRICT OF COLUMBIA.

PRINTING-PRESS.

Specification of Letters Patent.

Patented Dec. 18, 1917.

Application filed May 8, 1917. Serial No. 167,258.

To all whom it may concern:

Be it known that I, EDWIN RIoKnNBAoHER, a citizen of the United States,residing at WVashington, in the District of Columbia, have inventedcertain new and useful Improvements in Printing-Presses, of which thefollowing is a specification.

My invention relates to improvements in printing presses, and refersparticularly to an attachment which, while capable of practical andefficient use upon printing presses, may be used upon other mechanismsand perform its functions in a useful and proper manner.

The leading object of my invention is the provision of a mechanism whichcan be easily applied to printing presses in general use and which willoperate automatically to stop the feed of the paper when a defect ispresented in the paper in its feeding operation, such stopping of thepaper feeding insuring a saving in time, labor and paper, as well aspreventing injury to the type by reason of the paper massing 0r crowdingupon the face of the type between the form and pressure rollers.

Another object of my invention is the provision of a mechanism forstopping the feed of the paper, which will be capable of application ata very small expense, which will be absolutely positive and reliable inoperation, and which from every point of view will prove efficient,desirable and practical forthe purposes intended.

With these objects in View, my invention, broadly stated, consists of anattachment located in proper relation to the paper feeding rollers andthe impression cylinder, which, when the paper is creased, rumpled orother wise defective, will be operated by contact of the defectivesheet, to efiect the instant stopping of the advance of the next sheetof paper, thus preventing the further feeding of the paper until properadjustment has been made.

The invention further consists of an attachment .for automaticallystopping the feed of the paper to the impression cylinder, embodyingnovel features of construction and combination of parts, substantiallyas shown, described and particularly defined by the claims.

In order that the detail construction and the operation of my inventionmay be fully understood and its advantages be appreciated, I have shownin the accompanying drawings an attachment constructed in accordancewith and embodying my invention. I

Figure 1 is a plan View of my attachment, the impression cylinder andthe paper feeding rollers being shown in proper relation and in dottedlines.

of the means for engaging the paper to stop its feed, and

Fig. 5 is a detail view of the connection between the two-part rod ormember to allow the proper movement thereof.

The invention is shown in connection with a printingpress in which Arepresents the impression cylinder, B the paper guide over which thepaper passes from the impression cylinder, O the paper receiving andguiding rollers, and D the support for the paper between a pair of therollers, although my invention may be used in connection with othermachines and perform its functions in a practical manner.

Located in proper relation to and above the paper-feeding rollers arethe pair of rigidly mounted brackets E, in whose upper ends is mountedthe shaft F, which shaft has secured intermediate thereof the sleeve Gr,formed with the depending arm H, having an offset J, to which is securedthe slotted foot K, retained in proper relation'to the offset J, bymeans of adjusting nuts K, said foot being formed with a lug K havingmounted therein a spindle K forming the bearing for the pivoted paperengaging finger L. g

The shaft F, has a rocking or tilting action in the brackets, and isretained in normal position by means of the arm M, having one endconnected to the shaft, and its other end connected to the bracket bymeans of a coiled spring M, which retains the shaft and arm with itspaper-engaging finger in normal position, but permits said arm andfinger to be moved under proper conditions.

To one end of the shaft F, is secured the sleeve N, formed with the rodN, which rod has its inner end N bifurcated and formed with a slot N,which permits connection with the shorter rod 0, and receives the pin 0on the inner end of said rod 0, while the outer end of said rod issecured at on the shaft P, which shaft is secured in the lower portionof the brackets Q, suitably anchored at R to a part of the machine.

This construction provides a two-part or jointed rod connection betweenthe shaft F, which carries the paper-engaging finger, and the shaft 1,upon which is mounted the pair of curved arms Q, which are retainedthereon in proper adjustment by means of the set screws T, and saidcurved arms have their lower curved end arranged adjacent to theimpression cylinder in order that in the event of the paper beingdefective by reason of a creasing or rumpling, said defeet in the paperwill cause such paper to contact with the arms and tilt such armsupward, simultaneously moving the twopart rod and at the same timetilting the arm carrying the paper engaging finger, throwing'the fingerquickly upon the paper sheet and causing an instant stopping of the feedof such paper, as clearly shown in Fig. 3, in which is shown the paperas it is fed in dotted lines, also in dotted lines the position theparts of my invention assume when the paper is being stopped in itsfeed,and in full lines the position ofthe parts when conditions are normal,the two-part rod being limited in its downward movement by the pair ofstops S, as clearly shown in Fig. 1.

From the foregoing description taken in connection with the drawing, theoperation of my invention will be readily understood, and by referenceto Fig. 3, it will be noted that in normal position the paper is fedfrom the guide and feed roller to the form roller and passes therefrom,and in the event of an obstruction upon the paper a contact of the paperwith the curved arm is instantly made, whichcauses the parts to assumethe position shown in dotted lines, which instantly stops the feed ofthe paper and insures a saving of time, labor and expense, as well as awaste of paper and damage to the type.

It will be understood that my mechanism can be applied to printingpresses and other machinery under proper condition and at a smallexpense and that it will absolutely operate in a reliable and automaticmanner to effect the stopping of the feed of paper or like material.

I claim:

1. In combination-with a printing press, a mechanism for stopping thepaper feed, consisting of a shaft, a finger mounted Copies'of-thispatent may be obtained for thereon and adapted to engage the paper, atwo-part rod connected to said shaft, a shaft connected to the othermember of said twopart rod, and means carried by the latter shaft andoperated upon by the paper to tilt said-shaft, move the two-part rod andcome into contact with the paper to stop the feed thereof.

2. In combination with a printing press, a mechanism for stopping thepaper feed, consisting of a shaft, a finger mounted thereon and adaptedto engage the paper, a twopart rod connected to said shaft, a shaftconnected to the other member of said tw-opart rod, and means carried bythe latter shaft and operated upon by the paper to tilt said shaft, movethe two-part rod and come into contact with the paper to stop the feedthereof, and means for limiting the movement of said two-part rod.

3. In combination with a' printing press, a mechanism for stopping thepaper feed, consisting of a shaft, a finger mounted thereon and adaptedto engage the paper, a two-part rod connected to said'shaft, a shaftconnected to the other member of said twopart rod, and means carried bythe latter shaft and operated upon by the paper to-tilt said shaft, movethe two-part rod and come into contact with'the paper to stop the feedthereof, and means forilimiting the 'movement of said two-part rod andfor returning the shafts to normal position.

4-. Anattachment of the character de-' scribed, consisting of a pair ofsuitably spaced apartparallel disposed shafts, aflexibleconnectionbetween said shafts, a paper engaging means carried byone of said shafts and a paper stoppingmeans carried by the other shaftand operated to stop'the feed by the engagement of thepaper with saidpaper engaging means.

An attachment of thecharacter described, consisting of a pair ofsuitably spaced" apart parallel disposed shafts, a flexible connectionbetween said shafts, a

paper engaging means carried by one of said shafts, and apaper stoppingmeans carried by the other shaftand operated to stop the feed by theengagement of the paper with said paper engaging means, and means forreturning the shafts to normal position-and for limiting the movement ofsaid flexible connection. 7

In testimony whereof I affix my signature in the presence of twowitnesses.

EDW'IN 'RIGKENBACHER.

Witnesses MARY E. SMoo'r, IVM. L. Moons.

Washington; 13$.

